"The Ministry of Foreign Affairs and the embassy in Tehran are in contact with relatives. The man is represented by a legal representative," says Foreign Minister Maria Malmer Stenergard (M) in a written response via the Ministry of Foreign Affairs' press service.
"Out of consideration for consular confidentiality and in order not to complicate our work, we will not go into further details," it adds.
The man, who has both Swedish and Iranian citizenship, has been imprisoned since last summer and a trial has begun, according to the AFP news agency.
He is said to have received Swedish citizenship in 2020, according to Iran's judiciary.
The man was arrested in connection with the Twelve-Day War with Israel in June and is accused of spying on behalf of Israel.
Iran does not recognize dual citizenship and handles proceedings against people with Iranian passports as internal legal matters.
In October, Iran toughened the penalties for those convicted of spying for Israel or the United States. After the 12-Day War, a number of people have been arrested on such charges, and several have been executed.
